Laboratory manual of colloid chemistry

Find a copy in the library Finding libraries that hold this item Harry Nicholls , b. Laboratory manual of colloid chemistry. New York, J. Reviews User-contributed reviews Add a review and share your thoughts with other readers. Be the first. Add a review and share your thoughts with other readers. Tags Add tags for "Laboratory manual of colloid chemistry,". Similar Items Related Subjects: 3 Colloids. All rights reserved. Please sign in to WorldCat Don't have an account?

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Images Donate icon An illustration of a heart shape Donate Ellipses icon An illustration of text ellipses. Laboratory manual of elementary colloid chemistry Item Preview. On standing, it gets separated into two layers, i. The mixing capacity of different oils with water is different. This mixing capacity of the oil in addition to its nature depends upon the method of shaking also i. The stability of an oil and water emulsion is increased by the addition of a suitable emulsifying agent such as soap solution.

Soap contains sodium salt of long chain aliphatic carboxylic acids with the carboxyl group as the polar group, which decreases the interfacial surface tension between oil and water.

Hence oil mixes with water and emulsification takes place. The concentration of soap required for complete emulsification is called optimum concentration. Any amount less or more than this optimum amount does not cause an effective stabilisation. In the presence of optimum amount of soap solution, oil in water emulsion is more stable and the separation of oil and water layers takes more time. Mark these as B, C, D and E and to each of the test tubes, add 5 mL distilled water followed by 10 drops of mustard oil in test tube B, linseed oil in test tube C, castor oil in test tube D and machine oil in test tube E, respectively.

Record the time taken for the separation of the two layers. Shake each test tube for five minutes and record the time of separation of the layers in each case again. What provides stability to milk? How does this emulsion get stabilised? Issue Date : 05 August Anyone you share the following link with will be able to read this content:.

Sorry, a shareable link is not currently available for this article. Provided by the Springer Nature SharedIt content-sharing initiative. Advanced search. Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily. Skip to main content Thank you for visiting nature. Abstract 1 GRAHAM'S pioneer work on colloids is bearing rich fruit to-day, and colloid chemistry is becoming more and more important in theory and in practice.

By Emil Hatschek. London: J. Churchill, Price 6 s. Gabriel Jones Pp. London: Methuen and Co.